Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
7th Edition
ISBN: 9780134802213
Author: Tony Gaddis
Publisher: PEARSON
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Textbook Question
Chapter 16.1, Problem 16.1CP
Why do most businesses use a DBMS to store their data instead of creating their own text files or binary files to hold the data?
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Change the following code so that there is always at least one way to get from the left corner to the top right, but the labyrinth is still randomized.
The player starts at the bottom left corner of the labyrinth. He has to get to the top right corner of the labyrinth as fast he can, avoiding a meeting with the evil dragon. Take care that the player and the dragon cannot start off on walls. Also the dragon starts off from a randomly chosen position
public class Labyrinth { private final int size; private final Cell[][] grid;
public Labyrinth(int size) { this.size = size; this.grid = new Cell[size][size]; generateLabyrinth(); }
private void generateLabyrinth() { Random rand = new Random(); for (int i = 0; i < size; i++) { for (int j = 0; j < size; j++) { // Randomly create walls and paths grid[i][j] = new Cell(rand.nextBoolean()); } } // Ensure start and end are…
Change the following code so that it checks the following 3 conditions:
1. there is no space between each cells (imgs)
2. even if it is resized, the components wouldn't disappear
3. The GameGUI JPanel takes all the JFrame space, so that there shouldn't be extra space appearing in the frame other than the game.
Main():
Labyrinth labyrinth = new Labyrinth(10);
Player player = new Player(9, 0); Dragon dragon = new Dragon(9, 9);
JFrame frame = new JFrame("Labyrinth Game"); GameGUI gui = new GameGUI(labyrinth, player, dragon);
frame.add(gui); frame.setSize(600, 600); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true);
public class GameGUI extends JPanel { private final Labyrinth labyrinth; private final Player player; private final Dragon dragon; //labyrinth, player, dragon are just public classes
private final ImageIcon playerIcon = new ImageIcon("data/images/player.png");…
Make the following game user friendly with GUI, with some simple graphics. The GUI should be in another seperate class, with some ImageIcon, and Game class should be added into the pane.
The following code works as this: The objective of the player is to escape from this labyrinth. The player starts at the bottom left corner of the labyrinth. He has to get to the top right corner of the labyrinth as fast he can, avoiding a meeting with the evil dragon. The player can move only in four directions: left, right, up or down. There are several escape paths in all labyrinths. The player’s character should be able to moved with the well known WASD keyboard buttons. If the dragon gets to a neighboring field of the player, then the player dies. Because it is dark in the labyrinth, the player can see only the neighboring fields at a distance of 3 units.
Cell Class:
public class Cell { private boolean isWall; public Cell(boolean isWall) { this.isWall = isWall; } public boolean isWall() { return…
Chapter 16 Solutions
Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
Ch. 16.1 - Why do most businesses use a DBMS to store their...Ch. 16.1 - When a Java programmer uses a DBMS to store and...Ch. 16.1 - Prob. 16.3CPCh. 16.1 - Prob. 16.4CPCh. 16.1 - Prob. 16.5CPCh. 16.1 - Prob. 16.6CPCh. 16.1 - What static JDBC method do you call to get a...Ch. 16.2 - Describe how the data that is stored in a table is...Ch. 16.2 - What is a primary key?Ch. 16.2 - What Java data types correspond with the following...
Ch. 16.3 - Prob. 16.11CPCh. 16.3 - Prob. 16.12CPCh. 16.3 - Prob. 16.13CPCh. 16.3 - Prob. 16.14CPCh. 16.3 - What is the purpose of the % symbol in a character...Ch. 16.3 - How can you sort the results of a SELECT statement...Ch. 16.3 - Assume that the following declarations exist:...Ch. 16.3 - How do you submit a SELECT statement to the DBMS?Ch. 16.3 - Prob. 16.19CPCh. 16.3 - Prob. 16.20CPCh. 16.4 - Prob. 16.21CPCh. 16.4 - Prob. 16.22CPCh. 16.5 - The Midnight Coffee Roastery is running a special...Ch. 16.5 - Prob. 16.24CPCh. 16.6 - Prob. 16.25CPCh. 16.6 - Write a statement to delete the Book table you...Ch. 16 - Prob. 1MCCh. 16 - This is a standard language for working with...Ch. 16 - Prob. 3MCCh. 16 - The data that is stored in a row is divided...Ch. 16 - This is a column that holds a unique value for...Ch. 16 - This type of SQL statement is used to retrieve...Ch. 16 - This contains the results of an SQL SELECT...Ch. 16 - This clause allows you to specify search criteria...Ch. 16 - Prob. 9MCCh. 16 - Prob. 10MCCh. 16 - Prob. 11MCCh. 16 - Prob. 12MCCh. 16 - This method is specified in the Statement...Ch. 16 - This SQL statement is used to insert rows into a...Ch. 16 - This SQL statement is used to remove rows from a...Ch. 16 - Prob. 16MCCh. 16 - Prob. 17MCCh. 16 - True/False: Java comes with its own built-in DBMS.Ch. 16 - True/False: A Java programmer that uses a DBMS to...Ch. 16 - True/False: You use SQL instead of Java to write...Ch. 16 - True/False: In SQL, the not-equal-to operator is...Ch. 16 - Prob. 22TFCh. 16 - Prob. 23TFCh. 16 - Prob. 24TFCh. 16 - Prob. 1FTECh. 16 - Prob. 2FTECh. 16 - Prob. 3FTECh. 16 - What SQL data types correspond with the following...Ch. 16 - Look at the following SQL statement. SELECT Name...Ch. 16 - Write a SELECT statement that will return all of...Ch. 16 - Write a SELECT statement that will return the...Ch. 16 - Prob. 5AWCh. 16 - Write a SELECT statement that will return the...Ch. 16 - Write a SELECT statement that will return all of...Ch. 16 - Write a SELECT statement that will return the...Ch. 16 - Write a SELECT statement that will return the...Ch. 16 - Prob. 10AWCh. 16 - Write an SQL statement that does the following:...Ch. 16 - Prob. 12AWCh. 16 - Prob. 13AWCh. 16 - Assuming that conn references a valid Connection...Ch. 16 - Look at the following declaration. String sql =...Ch. 16 - Prob. 16AWCh. 16 - Prob. 17AWCh. 16 - Prob. 18AWCh. 16 - Prob. 1SACh. 16 - Prob. 2SACh. 16 - Prob. 3SACh. 16 - What is a primary key?Ch. 16 - Prob. 5SACh. 16 - What are the relational operators in SQL for the...Ch. 16 - What is the number of the first row in a table?...Ch. 16 - Prob. 8SACh. 16 - Prob. 9SACh. 16 - Customer Inserter Write an application that...Ch. 16 - Customer Updater Write an application that...Ch. 16 - Unpaid Order Sum Write an application that...Ch. 16 - Population Database Make sure you have downloaded...Ch. 16 - Personnel Database Creator Write an application...Ch. 16 - Employee Inserter Write a GUI application that...Ch. 16 - Employee Updater Write a GUI application that...
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